利用样条插值求取地震可变子波

THE EVALUATION OF SEISMIC VARIABLE WAVELET BY SAMPLE-STRIPE INTERPOLATION

本文较详细地论述了样条插值使分段地震子波变成连续时变性质子波的算法。虽然地震子波具有二维的特点,但使用二维样条函数会使运算量大和程序复杂。本文介绍的算法是使用经过改造的样条插值公式,即样条—拉格朗日混合插值公式,其主要优点是运算简单。

The author tried to expound the algorithm of sample-stripe interpolation through which the seismic wavelet can be sectionally converted to the continuous time-variant wavelet. It might lead to the calculation hard and procedure complicated while 2-D sample-stripe function is applied even though the seismic wavelet is characterized by 2-D. The sample-stripe interpolation formula being adapted in the algorithm recommended by the author is the revised one, e.g. theSample-Stripe-Lagrange’s Interpolation Formulae. Anyway, it implies the operation can be done easily.